Scrapbook of cuttings collected and notes made by Dr John Percy between 1864 and 1888, including transciptions of a series of twelve lectures given at the Royal School of Mines in December 1863 and January 1864, as published in 'Chemical News' between January and August 1864. The lectures, entitled 'Chemical Geology', are annotated and cover subjects such as silicon, alumina, sulphur and diamond.

These cuttings from 'Chemical News' are interspersed with those from several other publications, primarily the 'Engineering and Mining Journal', 'Mining Journal', and 'The Times' newspaper, as well as handwritten notes by Percy. Content mostly involves diamonds, diamond mining, and other mining activities.